Sash-balance connection.



l. H. SAYRES.

' s-AsH BALANCE coNNEcnoN.

lAPPLICATION FILED SEPT. 21. |912.

THE COLUMBIA PLAglooR/Px-l C0.. WASHINGTON. D. c.

need Een, aisne?.

gach other"` PIefform. These ends 1 9 ,ially 'in register, are

rt, lengthwise of the y `'facilitate the adjustly (Figs 3.4) by teck endof thejtermi- 5 j f This adjustment is along ythe :wire form- Y op, A.to the mid-bend Ld k20' being, passed 7 thueweighlt so, as to body ofthe chainii-is atween lthe. ,end bnds 1 down) beneath inne no, so .than finis ofthe loop and rises the lower ffiCQs'" ofA )rn end bends .19 and f working conditions,

iltedv atan *angle (see i ,ny "nn tnnrsfnnin, Off.

l to escape thefloop,

become slack. Fur-V allyescape thefend eason, of the position in use andthe Vfact ad `between'the" sides A und vfall 'which' might i ental slack.' 1 A m'ost secured ,by vthe use on .is the proximity n tofthel eye ofthe L'. x

by affords Vroom leweight to Vcounter- Vith sectional flink alfuse the value of roughlyappreciated. it isfpossible to theV terminal chain le link upon-the loop j and in many' cases such cases the` bight nay be made sharper el between the Voppo- `To all whom z't may concern." i

Bn it known that i, Jenn slang, n

in which a sash balance.connectionembodying my invention in one form, is'used; Fig.

Tone manner of application,v kof Vthe chain 2 is a perspective of the connection alone; Figs. 3 and l are side elevations showing thereto; Fig. 5 is a similar view .showing another manner of attaching the.chain; Fig. 6 isan end elevationovfy the yconnection; Fig. 7 is aside elevationshowingk a third mannerofl applying thechain; Figs.

8 and 9 are,respectivelysideelevation and plan of a modiicationfof the connection;

and Fig. 10 is a perspectivefof ,another modification. v

The present vconnection designedy primarily for use with chain supports. fThujs the installation illustrated inY Fig. 1 'shows .an open-link chain l0 of cominontype, one

end of which is held a pocket 11 inthe side of thesashlZbya fastenerfl of the type shown in my prior Patent 884n3441f1t is to be understood however, thatiniypresf ent invention is not limitedeither to the particular kstyle of chain illustrated or to use .in combination with thisv particularlistyle of sash chain fastener.

' Passing over the pulley 14, the other .end of the chainis secured by my improved yconnection 15 Vto the eye 16 of any suitable weight 17, hereshown ofthe sectional type. In lthe form illustrated, y'my improved connection comprises a length yof 'wire ybent back upon itself at 18V andA curved Vto'fori'n fan open loop, the. ends 1,9"and 2O of the VsAsH-NALANCE ooNNnorIoN.`

Specification of Letters Patent. i Application measpieniber 2'?, 1912. sriaiNo. mann."

being angled towarde erably bent into hook and 20', while lsubstant preferably spaced apai open loop, in order to; Inentfof` the chain.A

accomplished preferal; threading the open orf-n nal -link 2lover one of landpaissing the link ing one side of the lo 18. `The ends l9'ar y.through theeye 16 lof` engage the latter, 'the' then passed sidewise` be '19 anali-20 and pnllec hook end ofthe bendv 'lined between the sides into engagementfwith Hthe registering' hooks l20 when in use. Undei the loop connection is t:

Figli)` and substantia the weight is taken by is obvious that in this possible for vthe link A21 even should thelchain therniore, itr is impos'si thel chainA to accident:

bends`19 and 20, byre .which theloop assumes that the kchain is guide ofthe loopfin any rise i "beA occasioned accid important advantage of the present connecti of the `end ofthe chai weight, since it jtherel the weight wellffor amp Vbalance the sash@ V A weights now Y in` gener: Vthis feature willbe tho lf As above explained threadv the neck" end oi link upon the loop. I thread the eye end Aof tl in like fashion`(F ig. 5)

'this is preferable. In

ofthe end bends 19,l 2o 1 so that' theI open chanrn site sides of the Wire is narroW enough to prevent the chain from tWisting into flat position beneath the bend. Where this ar rangement Would result in the passage of the chain edgeWise over the pulley, this may be avoided by so forming the connection so that the mid-bend 18 lies at right angles to the end bends 19 and 20 as shoWn at 22 in Figs. 8 and 9. rllhis brings the chain flat beneathl the end bends, just asin the assembly shoWn in Figs. 3 and 4 Where the neck end of the link is threaded on the loop.

A possible, but less desirable installation is shoWn in Fig. 7 in Which case the chain is passed beneath the mid-bend 18 and the open end of the terminal link threaded o-ver the end bends 19 and 20, so that both of the latter are embraced by the link.

Another modification is shoWn in Fig. 10 Where only one end 23 of the Wire is angled, the other end 24 being left straight. Except that it is slightly less easy to pass the body of the chain betWeen the ends, this construction is perfectly eiicient so long as the terminus of the end 23 is brought doWn far enough to meet or slightly overlap the end 24.

rlhe present connection may be used With any open-link chain Whether large or small, and as illustrated, may be attached to either end of the chain Without the use of pincers orrother appliances. The broad supporting surface afforded by the opposite sides of the loop, prevents the sWiveling of the Weight on the connection and consequently the Weight is held square in its Well. The chain is not Weakened in any Way, and the strain Vupon the terminal link is imparted in normal manner so as to secure the full strength of the chain construction. Being made of a single piece of Wire, the connection is of uniform strength throughout its length and is readily and cheaply made.

Obviously the particular forms shoWn are merely illustrativeexamples of my invention and may be modified in various Ways. While the Wire employed for l.the connection may be of spring steel 'this is not essential inasmuch as there is no possibility of the end bends 19 and 20 straightening out under the relatively light strain to Which they are subjected, While any chain Which could be used With this connection Would break before the end link could break the Wire at its mid-bend 18, Where these are both of usual Weight. Again my connection may readily be formed by an expanded metal process instead of by 'Wire bending.

I claim as my invention 1. A suspension hook for a sash Weight comprising a single Wire doubled back upon itself to afford a double strand curved in the direction of its length 'to form an open loop having tWo strands to pass through the Weight eye, and means at the opposite ends of the hook to engage a sash chain, said means at one end of the loop comprising the oppositely bent ends of the Wire lying substantially in register and normally spaced apart in the plane of the loop to facilitate the adjustment of the chain, substantially as described.

2. A sash Weight connection comprising an open metallic loop, the sides of Which are spaced apart transversely to the plane of the loop to accommodate a suspension chain betWeen the same, and the ends of Which are provided With cross members on one of Which may be threaded a link of a suspension chain engaged beneath the cross member at the'opposite end of the loop, substantially as described.

3. A sash Weight connection of the type described, comprising a Wire bent to form an openy loop one leg of Which is longer than the other and having chain-engaging bights at the opposite ends of the loop, said loop in operating position having its shorter leg passed through ythe eye of a sash Weight While the longer leg overlies said eye With its bight to one side thereof and substantially vertically vabove the bight of the shorter leg, in combination With a. sash chain passing freely through the bight of the longer upper leg of the loop and having its `terminal link threaded into engagement With the bight of the shorter leg of the loop, Whereby under operating conditions the chain extends substantially vertically to the bight of the shorter leg of the Yloop With the result that practically the entire strain of the connection is taken by the bight of the shorter leg of the loop and by the terminal link ofthe chain lying vertically in normal position of greatest strength and at a point of attachment substantially level With the top of the Weight.

4. A sash Weight connection of the type described, comprising a Wire bent back upon itself to form a double strand and curved in the direction of its length to afford an open loop one leg of Which is longer than the other and having chain-engaging bights at the opposite ends of the loop, said loop in operating position having its shorter leg passed through the eye of a sash Weight While the longer leg overlies said eye With its bight to one side thereof and substantially vertically above the bight of the shorter leg, in combination With a sash chain passing freely through the bight of the longer upper leg and having its terminal link threaded into engagement With the bight of the shorter leg of the loop, Whereby under operating conditions the chain extends substantially vertically to the bight of the shorter leg of the loop With the result that practically all the strain of the connection In testimony whereof I have Signed my is taken by the bight ofthe shorter leg of name toy this specification, in the presence of the loop and by the terminal link of the two subscribing Witnesses.

chain lying vertically in normal position of JOHN H. SAYRES. greatest strength and at a point of attach-l y v 'Witnessest ,Y 1 y V ment substantially level With the top of the, WALTER ABBE,

Weight. Y AL. H. GROTE.

Copies of this patent may be obtained for ve cents each, by addressing thev Commissioner ofPatent.

. Washington, D. C. y Y 

